When I was sweating at home, I realized that my air conditioner was not cooling as it should. In addition, a musty smell pervaded the room. After a quick inspection, I discovered that there was mold in my air conditioner. I didn't want to run into this problem again, so I did a little research. According to https://www.fortador-usa.com/blog/how-to-get-rid-of-mould-in-air-conditioners, it is recommended to clean the air conditioner at least once a year to prevent mold growth.